61427639716 has 9 divisors (see below), whose sum is σ = 107499236971. Its totient is φ = 30713572012.

The previous prime is 61427639699. The next prime is 61427639719. The reversal of 61427639716 is 61793672416.

The square root of 61427639716 is 247846.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61427639719) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 433731 + ... + 557653.

Almost surely, 2^61427639716 is an apocalyptic number.

61427639716 is the 247846-th square number.

It is an amenable number.

61427639716 is a deficient number, since it is larger than the sum of its proper divisors (46071597255).

61427639716 is an frugal number, since it uses more digits than its factorization.

61427639716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247850 (or 123925 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

The spelling of 61427639716 in words is "sixty-one billion, four hundred twenty-seven million, six hundred thirty-nine thousand, seven hundred sixteen".